Abstract
One effective measure of radioactive material purification is the use of strippable decontaminants, which effectively coat the pollutant, capture suspended particles in the air, and deposit them onto the surfaces of objects. However, there are some shortcomings in terms of film formation and peelability, such as a brittle coating and poor peelability. Therefore, in order to meet future military and emergency needs, this research investigated the influencing factors in the process of surface strippable decontamination. Experiments included tests for wettability, potential, particle size, strippable performance, tensile performance, ultraviolet transmittance reflectance, and film formation as well as image analysis of photomicrographs from an optical microscope system. These experiments indicate that the strippable decontaminant is a viable means of contamination removal.
Highlights
A large degree of radioactive surface contamination occurs during the operation and retirement of nuclear facilities, the transport of nuclear materials, and in the case of nuclear accidents
Through the research in this paper, compared with the results reported in the literature, the decontaminant, the effect of the decontaminant on pollutants is more intuitively described
Through the research in this paper, compared with the results reported in the literature, the decontamination process of the decontaminant is divided into more detailed steps, and the wetting and penetration processes that define how the decontaminant and pollutants progress through the process of decontamination are proposed
Summary
A large degree of radioactive surface contamination occurs during the operation and retirement of nuclear facilities, the transport of nuclear materials, and in the case of nuclear accidents. When large amounts of surface contaminants are moved, transported, or even decontaminated, they can cause the surface discharge of pollutants into the atmosphere, which leads to the generation of radioactive aerosols and environmental problems. The methods for removing contaminants from the surface are generally divided into physical methods and chemical methods. Physical methods include mechanical decontamination, sandblasting, ultrasonic decontamination, washing, and decontamination [1,2,3]. Chemical decontamination methods include reagent washing, electrochemical gel decontamination, and self-brittle film peeling [4,5,6,7]
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